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2009-04-26Fix for PR4079: make sure to construct the member expressions for Eli Friedman
offsetof correctly in the presence of anonymous structs/unions. This could definitely use some cleanup, but I don't really want to mess with the anonymous union/struct code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70156 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Fix for PR4074: allow subscripting non-lvalue arrays in C90 mode.Eli Friedman
I wasn't originally going to use this approach, but cases like test/Sema/expr-comma.c make things difficult. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70096 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25minor diagnostics improvements.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Make VerifyIntegerConstantExpr print extension warnings for non-ICEs.Eli Friedman
Overall, I'm not particularly happy with the current situation regarding constant expression diagnostics, but I plan to improve it at some point. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25fix PR4073 by making designated initializer checking code useChris Lattner
VerifyIntegerConstantExpression instead of isIntegerConstantExpr. This makes it ext-warn but tolerate things that fold to a constant but that are not valid i-c-e's. There must be a bug in the i-c-e computation though, because it doesn't catch this case even with pedantic. This also switches the later code to use EvaluateAsInt which is simpler and handles everything that evaluate does. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70081 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25remove a fixme that is already done.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70064 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Change SemaType's "GetTypeForDeclarator" and "ConvertDeclSpecToType" to Chris Lattner
always return a non-null QualType + error bit. This fixes a bunch of cases that didn't check for null result (and could thus crash) and eliminates some crappy code scattered throughout sema. This also improves the diagnostics in the recursive struct case to eliminate a bogus second error. It also cleans up the case added to function.c by forming a proper function type even though the declarator is erroneous, allowing the parameter to be added to the function. Before: t.c:2:1: error: unknown type name 'unknown_type' unknown_type f(void*P) ^ t.c:4:3: error: use of undeclared identifier 'P' P+1; ^ After: t.c:2:1: error: unknown type name 'unknown_type' unknown_type f(void*P) ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70023 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24reject explicit pointer arithmetic on interface pointers in 64-bit objc ABIChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70004 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24fix the sizeof error recovery issue (sizeof-interface.m:attributeRuns)Chris Lattner
by correctly propagating the fact that the type was invalid up to the attributeRuns decl, then returning an ExprError when attributeRuns is formed (like we do for normal declrefexprs). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24Avoid issuing spurious errors as side-effect of diagnosingFariborz Jahanian
application of sizeof on an interface. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69980 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24Fix rdar://6821047 - clang crashes on subscript of interface in 64-bit modeChris Lattner
Several changes here: 1. We change Type::isIncompleteType to realize that forward declared interfaces are incomplete. This eliminate special case code for this from the sizeof path, and starts us rejecting P[4] when P is a pointer to an incomplete interface. 2. Explicitly reject P[4] when P points to an interface in non-fragile ABI mode. 3. Switch the sizeof(interface) diagnostic back to an error instead of a warning in non-fragile abi mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69943 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24Eliminate Sema::ObjCImplementations, relying instead on name lookup. What's ↵Douglas Gregor
good for uniformity is good for PCH (or is it the other way around?). As part of this, make ObjCImplDecl inherit from NamedDecl (since ObjCImplementationDecls now need to have names so that they can be found). This brings ObjCImplDecl very, very close to ObjCContainerDecl; we may be able to merge them soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69941 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23Eliminate the three SmallVectors in ObjCImplDecl (for instanceDouglas Gregor
methods, class methods, and property implementations) and instead place all of these entities into the DeclContext. This eliminates more linear walks when looking for class or instance methods and should make PCH (de-)serialization of ObjCDecls trivial (and lazy). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69849 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Tighten up blocks type checking. This was discussed back in theMike Stump
r56595 timeframe, but left undone. Radar 6812711 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Fix rdar://6814047, a crash on invalid in blocks code I noticed whenChris Lattner
working on the previous fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21fix marking of nested blocks with the "hasBlockDeclRefExprs" toChris Lattner
mark exactly the blocks which have references that are "live through". This fixes a rejects valid: rdar://6808730 - [sema] [blocks] block rejected at global scope git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69738 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21this is a warning now, return a well formed ast.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69731 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21reject sizeof(itf) when itf is a forward declared interface, or whenChris Lattner
in non-fragile abi mode. rdar://6811884 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Kill ASTContext::[gs]etFieldForDecl, instead we just lookup thingsDaniel Dunbar
when we need them -- which is exactly what some code was already doing! - No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69648 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Some cleanup and bug-fixing for address-of checking. This causes a couple of Eli Friedman
minor accepts-invalid regressions, but we weren't really rejecting them for the right reason. We really need a more general solution to detect all the cases of the promotion of arrays with a register storage class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69586 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19run the jump checker on blocks, even though they don't have gotos,Chris Lattner
they do allow switches. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18refactor some code, adding a new getLabelMap() accessor methodChris Lattner
so that clients can't poke the function-local one when they really want the current block label. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69463 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18FunctionDecl::getBody() is getting an ASTContext argument for use inDouglas Gregor
lazy PCH deserialization. Propagate that argument wherever it needs to be. No functionality change, except that I've tightened up a few PCH tests in preparation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69406 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-17Fixup semantic analysis for nested blocks, and allow block literalMike Stump
expressions that can be of static duration to be returned. Radar 6786551 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69331 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-16Fix a crash bug when comparing overload quality of conversion operators with ↵Sebastian Redl
conversion constructors. Remove an atrocious amount of trailing whitespace in the overloaded operator mangler. Sorry, couldn't help myself. Change the DeclType parameter of Sema::CheckReferenceInit to be passed by value instead of reference. It wasn't changed anywhere. Let the parser handle C++'s irregular grammar around assignment-expression and conditional-expression. And finally, the reason for all this stuff: implement C++ semantics for the conditional operator. The implementation is complete except for determining lvalueness. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69299 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-15Implement support for designated initializers that refer to members ofDouglas Gregor
anonymous structs or unions. Fixes PR3778. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69153 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-15Improve "assignment to cast" diagnostic.Daniel Dunbar
- Strip off extra parens when looking for casts. - Change the location info to point at the cast (instead of the assignment). For example, on int *b; #define a ((void*) b) void f0() { a = 10; } we now emit: /tmp/t.c:4:3: error: assignment to cast is illegal, lvalue casts are not supported a = 10; ^ ~ /tmp/t.c:2:12: note: instantiated from: #define a ((void*) b) ~^~~~~~~~~~ instead of: /tmp/t.c:4:5: error: expression is not assignable a = 10; ~ ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69114 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-12Fix rdar://6770142 - Class and qualified id's are compatible, just likeChris Lattner
Class and unqualified id's are. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68899 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-12implement rdar://6780761, making sema reject some code that otherwiseChris Lattner
crashes codegen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68891 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-11fix blocks to reject objc interfaces returned by value. Also,Chris Lattner
a block without a prototype should still coerce a return in it to use the declared return type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68875 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-09Propagate the ASTContext to various AST traversal and lookup functions.Douglas Gregor
No functionality change (really). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68726 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-08Fix <rdar://problem/6770998> make cast of super illegal (again:-)Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68659 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-08Sema::CheckConditionalOperands(): Soften pointer/integer mismatch from ↵Steve Naroff
error->warning. Fixes <rdar://problem/6762239> [sema] gcc incompatibility; error on incompatible operand types in ?:. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68617 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-07Fixes method name lookup when method appears inFariborz Jahanian
the base implementations (and not in current implementation). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68527 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-06Make casting 'super' a deprecated warning (instead of a hard error).Steve Naroff
This will simplify clang adoption, and is probably better "etiquette" (since gcc has always accepted this idiom without warning). Once we are over the adoption hurdle, we can turn this into an error. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68468 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-06Fixed the Fix-It hints for comparison against a string literal. Thanks, Chris!Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68454 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-06Daniel convinced me that accepting "const va_list" arguments to va_arg isChris Lattner
a really really bad idea. Now that we emit an error about the unpromoted type, users should be able to understand what is going on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68447 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-05in va_arg diagnostics, print out the unpromoted type. This makes the Chris Lattner
diagnostic use the va_list typedef more often, see the difference in the changed testcase. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68441 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-05Add a warning for questionable va_args usage.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68435 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-05GCC compatibility: gcc allows applying va_args to const Chris Lattner
va_lists for some reason. This fixes rdar://6726818 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68434 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-03improve the string literal comparison warning to not call @encode's "string ↵Chris Lattner
literals". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68407 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-02When calling a function without a prototype for which we have aDouglas Gregor
definition, warn if there are too many/too few function call arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68318 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-01Add some more code modification hintsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68261 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31reduce nesting.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68091 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Codegen sometimes crashes on comparisons that aren't legal, justChris Lattner
disable this feature for now, to err on the side of rejecting instead of sometimes crashing. rdar://6326239 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68088 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-28Introduce a new OpaquePtr<N> struct type, which is a simple POD wrapper for aChris Lattner
pointer. Its purpose in life is to be a glorified void*, but which does not implicitly convert to void* or other OpaquePtr's with a different UID. Introduce Action::DeclPtrTy which is a typedef for OpaquePtr<0>. Change the entire parser/sema interface to use DeclPtrTy instead of DeclTy*. This makes the C++ compiler enforce that these aren't convertible to other opaque types. We should also convert ExprTy, StmtTy, TypeTy, AttrTy, BaseTy, etc, but I don't plan to do that in the short term. The one outstanding known problem with this patch is that we lose the bitmangling optimization where ActionResult<DeclPtrTy> doesn't know how to bitmangle the success bit into the low bit of DeclPtrTy. I will rectify this with a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67952 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-28Change compound assignment operators to keep track of both the promoted Eli Friedman
LHS type and the computation result type; this encodes information into the AST which is otherwise non-obvious. Fix Sema to always come up with the right answer for both of these types. Fix IRGen and the analyzer to account for these changes. This fixes PR2601. The approach is inspired by PR2601 comment 2. Note that this changes real *= complex in CodeGen from a silent miscompilation to an explicit error. I'm not really sure that the analyzer changes are correct, or how to test them... someone more familiar with the analyzer should check those changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67889 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-27If the user is trying to apply the -> or . member reference operatorDouglas Gregor
to a function or function pointer, it's probably because the user forgot to put in parentheses () to call the function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67826 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-27Fix rdar://6719156 - clang should emit a better error when blocks are ↵Chris Lattner
disabled but are used anyway by changing blocks from being disabled in the parser to being disabled in Sema. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67816 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-26Simplify CXXScopeSpec a lot. No more weird SmallVector-like hacks hereDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67800 91177308-0d34-0410-b5e6-96231b3b80d8
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